Communication Apparatus and Control Method of the Same

1. A communication apparatus which has at least a first state and a second state in which power consumption is less than in the first state, comprising: a processor; and a memory coupled to the processor storing instructions that, when executed by the processor, cause the processor to function as: a detection unit configured to, by receiving predetermined information from an external apparatus in the second state before connecting to a network, detect an external apparatus in which a predetermined function is available; a connection unit configured to, in a case where an external apparatus in which the predetermined function is available is detected by the detection unit, cause the communication apparatus to connect to a common network with the external apparatus in which the predetermined function is available; a processing unit configured to, after connecting to the common network by the connection unit, communicate with the external apparatus in which the predetermined function is available using the predetermined information, and perform processing based on the predetermined function; and a transition unit configured to cause the communication apparatus to transition from the second state to the first state before the processing based on the predetermined function is performed by the processing unit, wherein the transition unit causes the communication apparatus to transition from the second state to the first state, before the communication apparatus is connected to the network by the connection unit after an external apparatus in which the predetermined function is available is detected by the detection unit.

2. The apparatus according to claim 1 , wherein the predetermined information is a request for utilizing the predetermined function.

3. The apparatus according to claim 1 , wherein the predetermined function is a service to be provided by the communication apparatus.

4. The apparatus according to claim 1 , wherein the transition unit causes the communication apparatus to transition from the first state to the second state, in a case where the communication apparatus has not connected to the network before a predetermined period of time elapses after causing the communication apparatus to transition from the second state to the first state.

5. The apparatus according to claim 1 , further comprising a transmission unit configured to, after an external apparatus in which the predetermined function is available is detected by the detection unit, transmit a response to the external apparatus.

6. The apparatus according to claim 5 , wherein the transmission unit does not transmit the response to an external apparatus in which the predetermined function is not available.

7. The apparatus according to claim 1 , wherein even if an external apparatus in which the predetermined function is not available is detected by the detection unit, the transition unit does not cause the communication apparatus to transition from the second state to the first state.

8. The apparatus according to claim 1 , wherein the connection unit connects to a common network with the external apparatus based on a Wi-Fi Direct protocol.

9. The apparatus according to claim 1 , wherein the connection unit causes the communication apparatus to connect to a common network with the external apparatus based on a Bluetooth protocol.

10. The apparatus according to claim 1 , wherein the predetermined function includes a function for transmitting or receiving a file.

11. The apparatus according to claim 1 , wherein the predetermined function includes a function for reproducing image data with the external apparatus.

12. The apparatus according to claim 1 , wherein the predetermined function includes a function for printing image data with the external apparatus.

13. The apparatus according to claim 1 , wherein the communication apparatus acquires information for implementing the predetermined function from the external apparatus and determines based on the acquired information whether or not the communication apparatus is capable of implementing the predetermined function, and the transition unit performs the transition of the state of the communication apparatus after it is determined that the communication apparatus is capable of implementing the predetermined function.

14. A control method of a communication apparatus which has at least a first state and a second state in which power consumption is less than in the first state, the method comprising: detecting, by receiving predetermined information from an external apparatus in the second state before connecting to a network, an external apparatus in which a predetermined function is available; causing the communication apparatus to connect to, in a case where an external apparatus in which the predetermined function is available is detected, a common network with the external apparatus in which the predetermined function is available; after connecting to the common network, communicating with the external apparatus in which the predetermined function is available using the predetermined information, and performing processing based on the predetermined function; and causing the communication apparatus to transition from the second state to the first state before the processing based on the predetermined function is performed, wherein the transition from the second state to the first state takes place before the connection of the communication apparatus to the network, after the detection of an external apparatus in which the predetermined function is available.

15. A non-transitory computer-readable storage medium storing a program for causing a computer to execute a control method of a communication apparatus which has at least a first state and a second state in which power consumption is less than in the first state, the method comprising: detecting, by receiving predetermined information from an external apparatus in the second state before connecting to a network, an external apparatus in which a predetermined function is available; causing the communication apparatus to connect to, in a case where an external apparatus in which the predetermined function is available is detected, a common network with the external apparatus in which the predetermined function is available; after connecting to the common network, communicating with the external apparatus in which the predetermined function is available using the predetermined information, and performing processing based on the predetermined function; and causing the communication apparatus to transition from the second state to the first state before the processing based on the predetermined function is performed, wherein the transition from the second state to the first state takes place before the connection of the communication apparatus to the network, after the detection of an external apparatus in which the predetermined function is available.